fix(ci): change Synology venv path to home dir and setup python step in deploy workflow

.gitea/workflows/ci.yml

@@ -36,7 +36,7 @@ jobs:
     - name: Setup Python Environment
       run: |
         # 순수 Python 패키지만 설치 (numpy/pandas 제외 — ARMv7l 휠 없음)
-        VENV_BASE=/volume1/gitea/python_venv
+        VENV_BASE=$HOME/python_venv
         REQ_HASH=$(md5sum tools/validate_specs.py 2>/dev/null | cut -d' ' -f1 || echo "default")
         VENV="$VENV_BASE/$REQ_HASH"
 
@@ -228,7 +228,7 @@ jobs:
 
     - name: Setup Python Environment
       run: |
-        VENV_BASE=/volume1/gitea/python_venv
+        VENV_BASE=$HOME/python_venv
         REQ_HASH=$(md5sum tools/validate_snapshot_admin_web_v1.py 2>/dev/null | cut -d' ' -f1 || echo "default")
         VENV="$VENV_BASE/$REQ_HASH"
 

.gitea/workflows/deploy-prod.yml

@@ -32,6 +32,14 @@ jobs:
       with:
         dotnet-version: ${{ env.DOTNET_VERSION }}
 
+    - name: Setup Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.10'
+
+    - name: Install Python Dependencies
+      run: pip install pyyaml openpyxl requests
+
     - name: "[GATE] Run Core Validations"
       run: |
         # CI 게이트: 핵심 검증 먼저 실행